Plastics na-ezo aka na ihe ndị mejupụtara resins (ma ọ bụ monomers polymerized ozugbo n'oge nhazi), agbakwunyere na mgbakwunye dị ka plasticizers, fillers, lubricants, and colorants, nke nwere ike ịkpụzi ka ọ bụrụ ọdịdị n'oge nhazi.
Njirimara ndị dị mkpa nke Plastics:
① Ọtụtụ plastics dị fechaa na kemịkalụ kwụsiri ike, na-eguzogide corrosion.
② Nguzogide mmetụta dị oke mma.
③ Ezi nghọta na iyi mgbochi.
④ Ngwongwo mkpuchi nwere obere ikuku thermal.
⑤ Ohaneze dị mfe ịkpụzi, agba na nhazi na ọnụ ala dị ala.
⑥ Ọtụtụ plastics nwere adịghị mma okpomọkụ na-eguzogide, elu thermal mgbasawanye, ma na-ere ọkụ.
⑦ Enweghi ike nke akụkụ, na-enwekarị nrụrụ.
⑧ Ọtụtụ plastik na-egosipụta arụmọrụ dị ala na-adịghị mma, na-aghọ ihe na-akụda mmụọ na ọnọdụ oyi.
⑨ Na-enwe ike ịka nká.
⑩ Ụfọdụ plastik na-agbari ngwa ngwa na ihe mgbaze.
phenolic resinsA na-eji ya n'ọtụtụ ebe na ngwa FRP (Fiber-Reinforced Plastic) chọrọ akụrụngwa FST (ọkụ, anwụrụ ọkụ, na nsi). N'agbanyeghị oke ụfọdụ (karịsịa nkuku ume), resin phenolic na-anọgide na-abụ akụkụ bụ isi nke resin azụmahịa, yana mmepụta kwa afọ zuru ụwa ọnụ nke ihe fọrọ nke nta ka ọ bụrụ nde tọn isii. Resins phenolic na-enye nkwụsi ike akụkụ dị mma na nguzogide kemịkalụ, na-edobe nkwụsi ike n'ime oke okpomọkụ nke 150-180 Celsius. Ngwongwo ndị a, jikọtara ya na uru arụmọrụ ha na-eri, na-akwalite ojiji ha na-aga n'ihu na ngwaahịa FRP. Ngwa a na-ahụkarị gụnyere ihe ndị dị n'ime ụgbọ elu, ndị na-ebu ibu, ime ụgbọ okporo ígwè, grating na ọkpọkọ mmanụ dị n'ụsọ osimiri, ihe ọwara mmiri, ihe esemokwu, mkpuchi roket nozzle, na ngwaahịa ndị ọzọ metụtara FST.
Ụdị ihe ngwakọta phenolic na-eme ka eriri eriri
Ihe mejupụtara phenolic nwere eririna-agụnye ihe ndị e ji kụkụkụkụ mee emeri, ákwà, na eriri na-aga n'ihu. A ka na-eji eriri gbutuo oge mbụ (dịka, osisi, cellulose) na ogige ịkpụzi phenolic maka ngwa dị iche iche, ọkachasị akụkụ ụgbọ ala dị ka mkpuchi mgbapụta mmiri na akụkụ esemokwu. Ogige ịkpụzi phenolic nke oge a na-etinye eriri iko, eriri igwe, ma ọ bụ na nso nso a, eriri carbon. Resin phenolic ejiri na ogige ịkpụzi bụ resin novolac, nke ejiri hexamethylenetetramine gwọọ ya.
A na-eji ihe eji akwa akwa akwa akwa akwa n'ụdị ngwa dị iche iche, dịka RTM (Resin Transfer Molding), ihe owuwu Sanwichi ebu mmanụ aṅụ, nchebe ballistic, ogwe ime ụgbọ elu, na ndị na-ebu ibu. A na-emepụta ngwaahịa na-aga n'ihu na-agbatị eriri site na ikuku filament ma ọ bụ pultrusion. Akwa na-aga n'ihuihe mejupụtara fiber-ikena-ejikarị resins mmiri-ma ọ bụ ihe mgbaze-soluble resole phenolic. Na agafe phenolics resole, sistemu phenolic ndị ọzọ metụtara—dị ka benzoxazines, cyanate esters, na resin Calidur™ emepụtara ọhụrụ—na-arụkwa ọrụ na FRP.
Benzoxazine bụ ụdị ọhụrụ nke resin phenolic. N'adịghị ka phenolics ọdịnala, ebe a na-ejikọta akụkụ molecular site na àkwà mmiri methylene [-CH₂-], benzoxazines na-etolite usoro cyclic. A na-emepụta Benzoxazines ngwa ngwa site na ihe phenolic (bisphenol ma ọ bụ novolac), amines ndị bụ isi, na formaldehyde. polymerization ha na-emepe mgbanaka anaghị emepụta ihe ọ bụla sitere na ngwaahịa ma ọ bụ ihe na-agbanwe agbanwe, na-eme ka nkwụsi ike akụkụ nke ngwaahịa ikpeazụ. Na mgbakwunye na oke okpomọkụ na nguzogide ọkụ, benzoxazine resins na-egosipụta ihe ndị na-adịghị na phenolics ọdịnala, dị ka obere mmiri absorption na arụ ọrụ dielectric kwụsiri ike.
Calidur™ bụ ọgbọ na-abịa, otu akụkụ, polyarylether amide thermosetting resin nke nwere okpomọkụ nke Evonik Degussa mepụtara maka ụlọ ọrụ ikuku na eletrọnịkị. Nke a resin na-agwọta na 140°C n'ime awa 2, na-enwe okpomọkụ mgbanwe iko (Tg) nke 195°C. Ugbu a, Calidur ™ na-egosiputa ọtụtụ uru maka ihe mejupụtara arụmarụ dị elu: enweghị ikuku na-agbanwe agbanwe, mmeghachi omume exothermic dị ala na mbelata n'oge ọgwụgwọ, ike ọkụ dị elu na mmiri mmiri, mkpakọ ngwakọta dị elu na ike ịkwa akwa, yana ike siri ike. Resin ọhụrụ a na-arụ ọrụ dị ka ụzọ dị ọnụ ala karịa etiti-to-high-Tg epoxy, bismaleimide, na cyanate ester resins na ikuku, njem, ụgbọ ala, eletriki / eletrọnịkị, na ngwa ndị ọzọ na-achọsi ike.
Oge nzipu: Jun-24-2025
